EFFECT OF NITROGEN AND BORON ON THE GROWTH AND YIELD OF SESAME

Abstract

ABSTRACT The experiment was conducted in the research field of Sher-e-Bangla Agricultural University farm, Dhaka, Bangladesh during the period from February to May, 2015 to find out the effect of nitrogen and boron on the growth and yield of sesame. The experiment considered of two factors. Factor A: Levels of nitrogen (4 levels)- N 0 : 0 kg N/ha (control), N 1 : 50 kg N/ha, N 2 : 60 kg N/ha and N 3 : 70 kg N/ha; and Factor B: Levels of boron (3 levels)- B 0 : 0 kg B/ha (control), B 1 : 2 kg B/ha and B 2 : 3 kg B/ha. The experiment was laid out in two factors Randomized Complete Block Design (RCBD) with three replications. For different level of nitrogen, at 30, 40, 50, 60 DAS and at harvest, the tallest plant (33.49, 54.79, 78.07, 94.58 and 111.89 cm, respectively) was observed from N 2 , while the shortest plant (29.87, 48.61, 68.16, 84.62 and 103.46 cm, respectively) from N 0 . The highest seed yield (1.51 t/ha) was observed from N 2 , while the lowest seed yield (1.09 t/ha) from N 0 . The highest stover yield (2.91 t/ha) was recorded from N 2 , while the lowest stover yield (2.01 t/ha) from N 0 . The maximum concentration in seed for N (0.55%), P (0.32%), K (0.55%), S (0.21%) and B (0.014%) was observed from N 2 , whereas the minimum concentration in seed for N (0.39%), P (0.26%), K (0.43%), S (0.17%) and B (0.011%) was found from N 0 . For different level of boron, at 30, 40, 50, 60 DAS and at harvest, the tallest plant (33.15, 54.54, 77.68, 92.46 and 110.93 cm, respectively) was recorded from B 2 , whereas the shortest plant (30.61, 48.90, 68.54, 87.74 and 106.04 cm, respectively) from B 0 . The highest seed yield (1.40 t/ah) was recorded from B 2 , whereas the lowest seed yield (1.30 t/ha) from B 0 . The maximum concentration in seeds for N (0.56%), P (0.31%), K (0.51%), S (0.20%) and B (0.014%) was recorded from B 2

and the minimum concentration for N (0.39%), P (0.27%), K (0.46%), S (0.18%) and B (0.009%) was found from B 0 . For interaction effect, at 30, 40, 50, 60 DAS and at harvest, the tallest plant (34.51, 58.26, 83.75, 97.05 and 116.43 cm, respectively) was observed from N 2 B 2 and the shortest plant (25.24, 44.54, 62.37, 80.61 and 100.64 cm, respectively) from N 0 B 0 . The highest seed yield (1.59 t/ha) was observed from N 2 B 2 and the lowest seed yield (1.03 t/ha) from N 0 . The maximum concentration in seeds for N (0.61%), P (0.34%), K (0.58%), S (0.22%) and B (0.017%) was observed from N 2 B 2 , while the minimum concentration in seeds for N (0.30%), P (0.24%), K (0.39%), S (0.16%) and B (0.007%) was recorded from N 0 B 0 . Combination of 60 kg N/ha and 3.0 kg B/ha can be more beneficial for the farmers to get better yield and economic return from the cultivation of sesame. B 0